The Valve,gate, cataloged under National Stock Number 4820-01-223-8635, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-223-8635 |
| Primary Part Number | 1/2IN FIG-56 |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Maximum Operating Temp and Media for Which Designed | 400.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF |
| Operating Pressure and Type | 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | RISING |
| Connection Type | THREADED INTERNAL PIPE |
| Valve Size | 0.500 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Nominal Thread Size | 0.500 INCHES IN |
| Bonnet Attachment Method | THREADED |
| Material | COPPER ALLOY BODY |
| Material | STEEL DISK |
| Material | STEEL SEAT |
| Material | STEEL STEM |
| Thread Series Designator | NPT |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| FIG.56 1/2IN.BRZ.150PSI. | The Walworth Company (USA) |
| FIG-56X15MM | The Walworth Company (USA) |
| 1/2IN FIG-56 PRIMARY | The Walworth Company (USA) |
NSN 4820-01-223-8635 is a Valve,gate, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-223-8635 has 3 manufacturer part numbers on file: FIG.56 1/2IN.BRZ.150PSI. (The Walworth Company), FIG-56X15MM (The Walworth Company), 1/2IN FIG-56 (The Walworth Company).
Key specifications for 1/2IN FIG-56: Inlet Relationship with Outlet: IDENTICAL; Maximum Operating Temp and Media for Which Designed: 400.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF; Operating Pressure and Type: 150.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 300.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS; Stem Type: RISING. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.